Hong Kong's official foreign currency reserve assets rose to 267 billion U.S. dollars in October, up by 900 million U.S. dollars in September, the city's Monetary Authority said on Monday.

There were no unsettled forward contracts at the end of October and end of September, according to the authority.

The total foreign currency reserve assets of 267 billion U.S. dollars represent over nine times the currency in circulation or 53 percent of Hong Kong dollar M3.

Hong Kong is the world's ninth-largest holder of foreign currency reserves based on the latest published figures, after the Chinese Mainland, Japan, Russia, China's Taiwan, India and South Korea.